Inking mechanism



Get. 22, 1935. w WQQD 2,017,932

INKING MECHANI SM Original Filed Oct. 23, 1926 5 Sheets-Sheet 2 dim.

Get. 22, 1935.

H. A. w. wooD' INKING MECHANISM Original Filed Oct. 28, 1926 5 Sheets-Sheet 5 Oct. 22, 1935. H. A. w. WOOD INKING MECHANISM Original Filed Oct. 28, 192s 5 Sheets-Sheet 4 Oct. 22, 1935.

Original Filed Oct. 28, 1926 H. A. W. WOOD INKING MECHANISM 5 Sheets-Sheet 5 JW-M Patented Oct. 22, 1935 UNITE STATES INKING MECHANISM Henry A. Wise Wood, New York, N. Y., assignor to Wood Newspaper Machinery Corporation, New York, N. Y., a corporation of Virginia Original application October 28, 1926, Serial No.

Divided and this application November.7, 1929, Serial No. 405,505

s Claims. (01. 101-350) This is a division of my application for patent on a Newspaper printing machine, filed October 28, 1926, Serial No. 144,877 patented October 21, 1930, No. 1,778,780.

5 This invention relates to an inking mechanism for a printing machine adapted especially for use for printing large daily papers such as are produced usually in the cities of the larger size outside of the few largest cities of the 10 country.

The principal objects of the invention are to provide an inking arrangement in which the fountain blades are readily accessible from the floor at the outside of the press for individual 15 adjustment and in which the form rolls can be adjusted individually and in a very convenient manner to get them into just the right contact with the plate cylinder and the ink drum, and to provide a simple device for regulating the 20 alternate contact of the ductor roll with the fountain roll and ink drum.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying 25 drawings in which Fig. 1 is a front view of an inking mechanism constructed in accordance with this invention;

Fig. 2 is a view of the right hand side of the same;

30 Fig. 3 is an end view on enlarged scale of the inking mechanism shown partly in section and including the printing couple;

Fig. 4 is an end view of the ink fountain and associated parts;

35 Fig: 5 is a similar view of an adjusting 'support for one of the rolls of the inking mechanism;

Fig. 6 is a side view of the same taken in the direction of the arrow 6 in Fig. 5;

40 Fig. 7 is a view looking in the same direction of the cam roll at the bottom of Fig. 5 and its supporting fork;

Fig. 8 is a side view of the parts shown in Fig. 5 with the ductor roll also shown;

Fig. 9 is a view of the end of the fountain roll with its bearing. and ductor roll operating cam, and

Fig. 10 is a plan showing the association of the 50 ink drum and distributing roll and means for vibrating the latter.

The printing unit is mounted on a solid base I. The frame comprises a part 2 located above the base and supported thereon by four or more 55 soft metal seats 1. These parts 2 of the printing unit frames carry the printing couples and inking mechanism.

I have shown the inking mechanism as being driven through a stationary, non-adjustable, impression cylinder shaft l2 from a motor l through a belt II. In the usual way the shaft l2 drives the plate cylinder shaft l3 through gearing. These two shafts carry the impression cylinder l9 and the plate cylinder 20.

A pair of form rolls 28 bear upon the plate cylinder and the ink drum 29 and are driven by them. This ink drum is surrounded by the usual distributing rollers 30.

On the driving shaft I3 is a gear meshing with a gear 32 which is carried bya shaft or stud and 1 drives a gear on the shaft 33 on which the ink drum 29 is mounted. This shaft is also provided with a bevel gear 34 driving another bevel gear on an inclined shaft 35 which, by spiral gears 36, drives the ink fountain roll 37. This is located in the ink fountain 38 mounted on projections 39. The ink fountain'is shown as provided with a regulating blade 39 made up of a plurality of sections, each adjusted independently by a screw 46. These blades are readily adjustable and accessible from the outside of themachine. The adjustment screws 40, which preferably are located one to each column, are supported on a carrier 4| which is fixed on the ink fountain 38.

The form roll is adjusted substantially radially with respect to the ink drum by adjusting screws 43 carried in threaded sockets 44 pivotally carried by the frame. The roll is adjusted by means of spanners applied to nuts 45 fixed on these screws, which screw into bearing members 46 pivoted on the shafts of the form rolls. The threads in the members 44 and 46 are of opposite pitch. In this way the form rolls are moved toward and from the ink drum and adjusted to have the proper pressure thereon.

Also mounted on the frame 2 at opposite ends are a pair of projections 43 abutting vertical screws 49 for adjusting a supporting frame 50 at each end. This adjustment moves the form roll substantially to and from the plate cylinder. The bearing member 46 carries a hinged cap to facilitate the removal of the form roll; this cap is'held securely in the locked-up position by a clamping screw 5|.

The distributing rollers are vibrated longitudinally by spiral gears 53 connecting the shaft of the ink drum with a transverse shaft 54 on which is an eccentric pin 55 operating a bell crank 56 pivoted on the frame. This bell crank enters a collar 51 on the shaft of the distributing roll. 55

Preferably each alternate distributing roll is operated in this Way.

The ink is supplied from the fountain roll 31 to the ink drum 29 by a ductor roll 60. This ductor roll is mounted on a frame made up of arms 59 extending radially from a shaft BI and adjustable circumferentially by adjusting screws 58. The arms 59 have open sided bearings for the ends of the ductor roll 60. The shaft 6 I is mounted on the frame and extends through it to the outside of the frame where it is provided with an arm 63 swingingly mounted on it by two bearings and having a frame 66 at its outer end,-which carries one of said bearings. An arm 62 fixed to the shaft Bl by bolts 64 is provided with semicylindrical recesses for the shaft 6| to which it is clamped by adjusting bolts 65. These bolts 65 can be screwed into a lug on the arm 63 to exert pressure on the shaft 6| through contact of said semi-cylindrical recess therewith. They hold the frame 66 in any adjusted position around the shaft. The frame 56 carries an adjusting screw 61. On this screw is a handle 68 which can be swung around to turn the screw and move along it a yoke 69 carrying a cam roll 10.

Fixed on the shaft of the fountain roll 31 is a ductor roll cam l i. It is provided with a series of cam surfaces which are wider at one end than at the other. Three sets of these surfaces are shown and they cooperate with the roll 10. When the roll 10 is at the outer end of its travel it will contact with the small end of the raised portions of the cam l l. nature as to allow this roll to be carried to its extreme position away from the shaft of the fountain roll 3'! only a very short period of time, three times per revolution. This means that the ductor roll 60 will engage the ink drum a minimum length of time during each revolution but it will engage it just as many times as if it were adjusted to the other end of the screw 61. In that case the ductor roll 60 will engage the ink drum throughout almost all of the revolution, being dropped from that position briefly three times per revolution. Thus by this variation of the interval or cycle, during which the ductor is in contact with the fountain roll, the amount of ink supply to the distribution system can be varied. Springs I2 tend constantly to pull the ductor roll toward the ink fountain roll and the roll 10 toward the cam ll. Adjusting screws 65 are ad justed to regulate the location of the arm 63 on the shaft 6 l They provide a positive connection of that arm with the shaft although it is loosely mounted thereon at the hub. On the shaft of the fountain roll 31 is a ratchet l5 engaged by a spring pressed pawl 16 carried by the ink fountain. The purpose of driving the fountain roll through a ratchet connection rather than a solidly geared connection is to permit the manual rotation of the fountain roll forwardly before the power is applied to the press so that the ink can be brought up through the distribution system with a minimum loss of unprinted sheets.

Operation The parts of the inking mechanism are driven in substantially the usual way and they operate as follows: The ink is regulated on the surface of the ink fountain roll 31 by the blades 39 each one being adjusted individually and each accessible from the outside of the press, these fountain rolls This part of the cam is of such a and their fountains being located on the outer side of the inking mechanism for each unit. The ink is delivered from the ink fountain roll intermittently to the ductor roll controlled by the adjusting roll 10 and cam 1| so that the ductor roll is in contact with the fountain roll 31 throughout part of its rotation but out of contact with it three times, in the form shown, during each revolution. The ductor roll 60 is brought into contact with the fountain roll whenever it is free to move to that position by the springs 12 which are adjustable as to their pulling power. The distributor rolls, or part of them, are vibrated longitudinally, as has been explained, to more thoroughly distribute the ink on the surface of the ink drum. This drum as usual delivers a film of the desired thickness to the two form rolls -28 which are adjusted in proper relationship to the ink drum and the plate cylinder 20 in the convenient manner explained.

Although I have illustrated and described only a single form of the invention I am aware of the fact that modifications can be made therein by any person skilled in the art without. departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is:

1. In an inking mechanism for a printing press, the combination with an ink drum, a fountain roll and a ductor roll, of means for intermittently swinging the ductor roll from the fountain roll to the ink drum and back again, comprising a cam on the ink fountain shaft and a roll therefor, means for controlling the duration of contact of the ductor roll with the fountain roll and ink drum by adjusting said roll, a shaft parallel with the shaft of the ink drum, arms thereon provided with bearings for the studs of the ductor roll, means adjustably fixed to said parallel shaft for supporting said roll and means for adjusting said arms circumferentially and holding them in adjusted position.

2. In an inking mechanism for a printing machine, the combination with the ink drum and fountain roll spaced apart, of a ductor roll located between them but in a position to contact with only one of them at a time, a shaft having arms thereon for supporting the ductor roll and also having arms thereon outside the frame, means for securing the latter arms fixedly to said shaft at any adjusted angle to the first named arms, means connected with the latter arms for controlling the period of contact of theductor roll with the ink drum and fountain roll and yielding means for constantly tending to pull the ductor roll back toward the fountain roll.

3. In an inking mechanism for a printing machine, the combination with the ink drum and fountain roll spaced apart, of a ductor roll located between them but in a position to contact with only one of them at a time, a shaft parallel to the ink drum shaft having arms thereon for supporting the ductor roll andalso having arms thereon outside the frame, means for securing the latter arms fixedly to said shaft at'anyad justed angle to the first named arms, said means comprising clamping bolts and adjusting bolts, and means connected with the latter arms for controlling the period of contact of the ductor roll with the ink drum and fountain roll.

HENRY A. WISE WOOD. V 

